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There was substantial wear and dezincification in several places.
In my boat (1972, #495), there are 3 separate parts, much like the diagrams at: http://www.alberg30.org/maintenance/Steering/RudderPost/
The pins coming out the post are soldered in place. They're pretty flimsy. For the bottom 2 parts (the mid-point bearing and the pin at the foot), they're just there to hold the part to the rudder. For the upper rudder stock, the torsional strength (the ability to turn the rudder by turning the tiller) comes from the fact the piece is bent, not from the pins. In the original version the midpoint bearing was offset 1/8" out of column compared to the other two parts. I'm guessing this is because it's made out of 3/4" stock and whoever built my rudder was having an off day and aligned the edges, rather than the centres of the pieces.
The rudder post had a keyway cut into the shaft below decks, in case the wheel steering option was wanted.
My rudder had a clam shell zinc installed in the middle of the rudder. It was through bolted, but not connected to any metal. I'm not sure why it was there. It's gone and the hole filled.
As you can see from the pictures, everything was ground out and rebuilt in stainless then glassed back in. The midpoint gudgeons and the shoe (which were also worn) had some bronze welded back on and then were machined to match the stainless parts.
Stephen Gwyn, Quasar, #495
